Optimization and Application of Filler for Capillary Water Feeder

Abstract：In order to release water resources crisis and improve water use efficiency for agriculture,test device of capillary water feeder was put forward based on the capillary tension and the negative pressure water technology,three group contrast tests were conducted indoor.In these experiments water absorption characteristics of three kinds of fiber were studied on,which were tight rope,elastic line and cotton,and hydraulic characteristics of capillary with fiber core number for filler and working pressure of capillary water feeder also were studied on.The results showed that the material selection of fiber,the fiber core number for filler and working pressure of capillary water feeder were the key to the capillary water feeder,and only when fiber diameter and fiber pore were 25 μm and 15 μm respectively,the fiber core number for filler was 6 and working pressure of capillary water feeder was between 30~40 cm,the water absorption performance of capillary water feeder achieved optimally.The research lay foundation for further study of no-pressure and continuous water supply and extension.